Friday, October 3, 2008

Muddiest Point: Lecture 6

I understand that computers send messages over networks by splitting each message into packets and sending those packets out individually. However, I don't understand how packets get put back together again to reform messages. How does TCP work?

Week 7 Readings

The article on Internet infrastructure was most helpful for me when it explained how caching works. I understood that my computer was saving some sort of information to make for faster loading times, but I didn't understand the principles involved until now. Article author Jeff Tyson is right to say that Domain Name Servers' ability to work together to handle billions of requests every day is a testimony to their design.
Reading the article on Integrated Library Systems felt a bit like being thrown into the deep end; I can't remember the last time that I read anything so impenetrably jargon-laden. If I understand the gist of the article, libraries have had no luck establishing standards for themselves, and vendors can't be persuaded to design interoperable modules. But the upshot is that the Web is currently making both of those problems irrelevant. Right?
The video on Google was fairly interesting even though it was filmed over four years ago. I found it amusing that when I did a search for Google Answers, I learned that the service was discontinued two years ago. I then found it even more amusing that when I did a search for Orkut, I learned that over 60% of the site's users are now located in Brazil. I can only imagine what was on display at Google's invite-only meeting this year!